# from Person import Person
# from Student import Student
# from Teacher import Teacher
#
# studentPer = Person('xiaoming', 20)
# teacherPer = Person('Alice', 50)
# student = Student(studentPer.name, studentPer.age, 1, 89)
# teacher = Teacher(teacherPer.name, teacherPer.age, 'chinese')
#
# print(isinstance(teacher, Person))
# print(isinstance(teacherPer, Student))
# print(isinstance(teacher, Teacher))
# print(isinstance(teacher, object))
